Probability Basicshard
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A box contains 5 red balls and 3 blue balls. You draw two balls without replacement. If you know that at least one of the balls drawn is red, what is the probability that both balls are red?
A box contains 5 red balls and 3 blue balls. You draw two balls without replacement. If you know that at least one of the balls drawn is red, what is the probability that both balls are red?